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University of Idaho Extension

 

Physical Address:
E. J. Iddings Agricultural Science Laboratory
Room 52
606 S Rayburn St.
Moscow, ID

Mailing Address:
University of Idaho Extension
875 Perimeter Drive MS 2338
Moscow, ID 83844-2338

Phone: 208-885-5883

Fax: 208-885-6654

Email: extension@uidaho.edu

Google Maps

Barbara Petty

Email: extdir@uidaho.edu


Weeds Publications & Resources


2017 Pacific Northwest Weed Management Handbook
A comprehensive guide to weed management in the Pacific Northwest. Covers biological weed control agents, pesticide safety and disposal, agrichemicals and their properties, and control of problem w . . . . . more details
 
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Alaska Field Guide to Potato Pests and Beneficial Insects in English and Russian > PDF
This 122-page pocket-sized manual helps potato field workers scout for and identify economically important diseases, insects, and weeds in potato crops in Alaska. Each pest or beneficial insect is ass . . . . . more details
 

Aquatic Vegetation Management and Control > PDF
Provides information on how to control algae and vascular plant weeds in recreational waters, drinking water reservoirs, agricultural reservoirs and water distribution channels, ornamental ponds, coas . . . . . more details
 

Eurasian Watermilfoil > PDF
Covers the biology, detection, and management of this invasive aquatic plant. Includes illustrations and descriptions of similar species and estimated costs for various control options, including trea . . . . . more details
 

Field Bindweed Convolvulus arvensis L.: Convolvulaceae > PDF
Field bindweed is one of the most common noxious weeds in the Pacific Northwest (PNW) and one of the most difficult to control. Crop yields often are reduced 50 percent or more where field bindweed in . . . . . more details
 

Hawkweeds > PDF
Describes the history of hawkweeds' invasion of the Pacific Northwest, how to identify hawkweeds, the biology and ecology of hawkweeds, and their control. Includes six color photographs and a map of h . . . . . more details
 

Herbicide-Resistant Weeds and Their Management > PDF
Keep weeds in your fields from becoming herbicide resistant by rotating among herbicides regularly. Learn how and why in this publication. Especially useful is a color-coded chart to help you distingu . . . . . more details
 
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Idaho's Noxious Weeds 2011 Control Guidelines > PDF
This pocket-sized booklet lists specific herbicides and biological control agents for each weed on Idaho's official noxious weeds list. 72 pp. . . . . . more details
 

Idaho's Noxious Weeds, 8th edition > PDF
This pocket guide has color photographs of all the weeds on Idaho's official noxious weeds list. Inside find maps showing each weed's distribution by county, leaf shape illustrations to aid in identif . . . . . more details
 
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Integrated Management of Downy Brome in Winter Wheat > PDF
Downy brome (Bromus tectorum L.), also known as cheatgrass, is especially troublesome in low precipitation production areas where crop rotations are mostly limited to winter wheat followed by . . . . . more details
 

Integrated Management of Feral Rye in Winter Wheat > PDF
Feral rye (Secale cereale L.), also known as volunteer rye, is a troublesome weed in winter wheat production in the low and intermediate rainfall zones of eastern Washington and Oregon and so . . . . . more details
 

Integrated Management of Jointed Goatgrass in the Pacific Northwest > PDF
Describes the components of an integrated system to manage jointed goatgrass, a particular problem in direct seed/reduced tillage management systems. The bulletin covers prevention, mechanical control . . . . . more details
 

Integrated Management of Prickly Lettuce in Wheat Production Systems > PDF
Prickly lettuce is a common weed in wheat production systems throughout the PNW, but it's difficult to manage. Herbicides can control prickly lettuce in wheat, but many biotypes have developed resist . . . . . more details
 

Integrated Weed Management in Dry Edible Beans > PDF
Describes problem weed species and the steps-prevention, cultural control, mechanical control, and chemical control-involved in integrated weed management. Includes 20 full-color photographs of weed s . . . . . more details
 

Jointed Goatgrass Best Management Practices: Intermountain Region > PDF
Learn methods for preventing and controlling jointed goatgrass, a weed of particular concern in the intermountain region where low moisture increases the weed's competitiveness with wheat. Authors: Mi . . . . . more details
 

Knotweed Shrubs: Identification, Biology, and Management > PDF
Being able to correctly identify the five knotweeds that grow in the Northwest can help you choose the best control strategies. Color photographs of the weeds accompany a detailed chart describing the . . . . . more details
 

Management of Goats for Controlling Noxious Weeds: A Primer > PDF
This publication presents an introduction to the use of goats for controlling noxious weeds, including the use of different goat management methods for various weed conditions. Authors: Shannon Willia . . . . . more details
 

Management Strategies for Preventing Herbicide-Resistant Grass Weeds in Clearfield Wheat Systems > PDF
Based on computer modeling, the publication describes herbicide rotation strategies aimed at preventing the buildup of herbicide-resistant grass weeds (downy brome, jointed goatgrass, and wild oat) in . . . . . more details
 

Managing Russian Thistle Under Conservation Tillage in Crop-Fallow Rotations > PDF
A comprehensive discussion of a familiar weed in the arid West. Sections include biology, residue, herbicide resistance, and management strategy. Photos of germinating seedlings, flowering stage, and . . . . . more details
 

Matrix in Weed Management Systems for Potatoes > PDF
Provides information on Matrix's mode of action, its effectiveness on various weed species, and how to use it to maximize its strengths and avoid hazards of misuse. 8 pp. Aurthos: Pamela Hutchinson, C . . . . . more details
 

Meadow Deathcamas in the Pacific Northwest > PDF
Found in all areas of the Pacific Northwest, meadow deathcamas (Toxicoscordion venenosum) is capable of killing livestock whether eaten as forage or in dried hay. Human poisonings have been reported i . . . . . more details
 

Mustards in Mustards: Guide to Identification of Canola, Rapeseed, and Related Weeds > PDF
This four-color, field-oriented identification guide allows users to identify rapeseed, canola, and mustard crop plants and their related weeds. A durable folder holds nine full-color identification c . . . . . more details
 
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Nightshade: Biology and Control in the Pacific Northwest > PDF
Covers nightshade distribution in the Pacific Northwest; identification of hairy, black, cultleaf, and bittersweet nightshades; nightshade biology and toxicity; crop damage; and control practices for . . . . . more details
 

Outlook Herbicide for Weed Control in Potatoes > PDF
Describes mode of action, use rates, application methods, weeds controlled, potato variety tolerances, and follow-crop restrictions. Provides UI research data on percentage control of various weeds in . . . . . more details
 

Oxeye Daisy > PDF
How to recognize and manage oxeye daisy in pastures, rangelands, and road sides. Color photographs. 4 pp. Authors: Steven Hines, Timothy S. Prather and Sandra Robins . . . . . more details
 

Paterson's Curse (Echium plantagineum) in the Pacific Northwest > PDF
Describes the weed, its habitat and dispersal mechanisms, and management strategies to prevent its introduction and to control it through manual removal, herbicide use, and biological control agents. . . . . . more details
 

Puncturevine > PDF
A member of the Caltrop family, this weed produces woody fruits that always land with one sharp spine pointed upward. Spines injure hooves, feet, and vehicle tires. A toxin from the plant may be linke . . . . . more details
 

Rattail Fescue: Biology and Management in Pacific Northwest Wheat Cropping Systems > PDF
Rattail fescue has become particularly widespread in PNW wheat cropping systems as minimum-tillage and direct-seeding practices have replaced intensive tillage. This full-color publication describes t . . . . . more details
 

Rush Skeletonweed > PDF
Rush skeletonweed is an exotic herbaceous biennial or creeping perennial plant that has become troublesome in many western states. Rush skeletonweed aggressively infests rangeland, cropland, and distu . . . . . more details
 

Scotch Broom > PDF
Describes scotch broom and methods for its prevention and control in 8 full-color pages. Authors: Andrew Hulting, K. Neff, E. Cooms, Ray Parker, G. Miller, L.C. Burrill . . . . . more details
 
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Scotch Thistle > PDF
Scotch thistle was introduced to the United States in the 1800s as an ornamental plant from the Mediterranean region. It is a noxious weed in Idaho, Oregon, and Washington. Scotch thistle can form den . . . . . more details
 

Strategies to Minimize the Risk of Herbicide-Resistant Jointed Goatgrass > PDF
This publication provides information about jointed goatgrass and its control with an emphasis on prevention and management of herbicide resistance. Authors: Lynn Ingegneri, Carol Mallory-Smith, and . . . . . more details
 

Strategies to Minimize the Risk of Herbicide-Resistant Jointed Goatgrass > PDF
This publication provides information about jointed goatgrass and its control with an emphasis on prevention and management of herbicide resistance. Authors: Lynn Ingegneri, Carol Mallory-Smith, and R . . . . . more details
 

Weed and Vegetation Management in Christmas Trees > PDF
Describes the top dozen weeds in Christmas trees and strategies for managing them, including prevention, mechanical control, control with cover crops and vegetated strips, flame weeding, biological co . . . . . more details
 

Weed Control in Idaho Lawns > PDF
Weeds are opportunistic and readily invade stressed or unhealthy lawns. Many weeds found in Idaho lawns can be prevented and controlled by following some basic management principles, including unde . . . . . more details
 

Weed Control Methods for Perennial Crops > PDF
In long-lived perennial crops such as berries and ornamental trees, the weed management methods used for annual crop systems are seldom options. Generally, weed control has been accomplished with repe . . . . . more details
 

Western Waterhemlock in the Pacific Northwest > PDF
Western waterhemlock (Cicuta douglasii) is the most poisonous plant in North America. This publication provides identifiers to assist in avoiding the toxic plant, including ways to distinguis . . . . . more details
 

White Bryony > PDF
A poisonous noxious weed, white bryony grows rapidly and can smother and kill small trees and shrubs. Learn its characteristics and how to identify and control it. Authors: Danielle Gunn, Don Morishit . . . . . more details
 

White Campion or White Cockle > PDF
This prolific seed producer infests hay fields, roadsides, ditches, and fencerows. Learn to identify, prevent, and control it. Color photographs. 4 pp. Authors: John Kugler, Robert Parker . . . . . more details
 

Wild Carrot > PDF
An abundant seed producer, this weed grows in meadows, pastures, along roadsides, and in noncrop areas. Also known as Queen Anne's lace, wild carrot is listed as a Class B noxious weed in Washington. . . . . . more details
 


Resources



Contact Information

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University of Idaho Extension

 

Physical Address:
E. J. Iddings Agricultural Science Laboratory
Room 52
606 S Rayburn St.
Moscow, ID

Mailing Address:
University of Idaho Extension
875 Perimeter Drive MS 2338
Moscow, ID 83844-2338

Phone: 208-885-5883

Fax: 208-885-6654

Email: extension@uidaho.edu

Google Maps

Barbara Petty

Email: extdir@uidaho.edu